Shutter-worker



(No Model.) 2 Sheets-Sheet l.

J. F. NEWHALL.

SHUTTER WORKER.

No. 429,793. Patented June 10, 1890.

By iczls (No Model.) 2 Sheets-Sheet 2. J. F. WHALL.

. SHUT WORKER.

No. 429,793 Patented June 10, 1890.

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UNITED STATES PATENT OFFIQE.

JOHN F. NEXVHALL, OF LYNN, MASSACHUSETTS.

SHUTTER-WORKER.

SPECIFICATION forming part of Letters Patent No. 429,793, dated June 10,1890.

Application filed March 8, 1890' Serial No. 343,130. (No model.)

To all whom it may concern.-

Be it known that I, JOHN F. NEWHALL, of Lynn, in the county of Essex andState of Massachusetts, have invented a new and ImprovedShutter-Operating Apparatus, of which the following is a specification.

This is a device or apparatus whereby the shutters on the outside of abuilding can be opened and closed simultaneously from the inside, and itis especially adapted for use in buildings which are provided withmetallic shutters intended to prevent the spread of fire.

In the accompanying drawings, in which similar letters of referenceindicate like parts, Figure 1 is an elevation representing shutters onthe outside of a building provided with my device or apparatus. Fig. 2is avertical section on line as, Fig. 1. zontal section on line y,Fig. 1. Fig. 4 is a sectional detail showing the supporting-bracketcontaining rollers on which the bars travel.

A A, A A, and A" A represent, respectively, shutters on differentstories of a building, of which E is awall. Ct at are the hinges onwhich said shutters swing.

The lower edges of the shutters A A are provided with pins 0 O, orequivalent devices, to which is pivotally secured one end of the rods orlinks D D. The other ends of these connecting-rods are pivotally securedto posts E E, rigidly supported by the bars H H. These bars are situatedand extend beneath the windows of a story, and are supported on rollers1, Fig. 4-, held in brackets 1, extending from the building. Theshutters at the left of the windows in the drawings are connected bymeans of the pins 0, the links D, and the posts E with the inner bar H,or bar next the building, and the shutters at the rightof the windowsare connected by the pins 0, the links D, and the posts E with the outerbar H.

It will readily be seen that by moving the bar H to the left or rightthe left shutters are opened or closed, while by moving the bar H to theright or left the right shutters are opened or closed. To move the barssimultaneously in opposite directions would hence open or close all theshutters of the stories with which they are connected. This isaccomplished by spreading the bars H H near the center, as shown inFigs.2 and 3, and ap- Fig. 3 is a horiplying racks h h to their innersurfaces at that point. These racks are engaged by a gear-wheel K, whichis fast on the vertical shaft L, which has bearings in the boxes in thebrackets L, secured to the outside of the building. A bevelgear N isfixed to this shaft, which is engaged by the bevel-gear N on the outerend of the horizontal shaft P, which extends through the building-walland is actuated by a crank on the inside. By turning this crank theshaft Lis rotated, and by means of the racks h h on the bars H H at eachstory the shutters of every story which is connected in the manner abovedescribed are opened and closed at a single operation.

In order that the shutters may not swing too far back-i. 6., past thecenter or deadpoint-stops d are rigidly applied to the rods D D.

If desired, instead of applying a pair of bars H H beneath each row ofwindows, one pair may be arranged to operate the windows of two stories,as shown in the lower portion of Fig. 1, where the lower edges of theshutters in one story and the upper edges of the shutters in anotherstory are connected in exactly the same manner to bars situated midwaybetween them.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is

The herein-described improved shutter-operating apparatus, consisting,essentially, of

the bracket I. extending from the outside of the building, horizontalshaft P, provided with the bevel-gear N, vertical shaft L, provided withthe bevel-gear N and gear-wheel K, the horizontal bars H H, spread apartcentrally, as shown, and provided with the internal racks h h, links DD, provided with the stops d, said links having their opposite endspivoted to said bars and the shutters, said bars H H being supported bysaid brackets and moving on rollers therein and being horizontally andsimultaneously reciprocated in opposite directions by means of saidgear-wheel K, and internal racks, all arranged and constructedsubstantially as set forth.

JOHN F. NEWHALL. Witnesses:

B. W. WILLIAMS, HENRY W. WILLIAMS.

